SOLUTION: An inlet pipe can fill a tank in 8 minutes. A drain can empty the tank in 12 minutes. If the tank is empty, and both the pipe and drain are open, how long will it take before the t

Algebra ->  Customizable Word Problem Solvers  -> Mixtures -> SOLUTION: An inlet pipe can fill a tank in 8 minutes. A drain can empty the tank in 12 minutes. If the tank is empty, and both the pipe and drain are open, how long will it take before the t      Log On

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Question 809345: An inlet pipe can fill a tank in 8 minutes. A drain can empty the tank in 12 minutes. If the tank is empty, and both the pipe and drain are open, how long will it take before the tank overflows?

Answer by richwmiller(17219) About Me  (Show Source):
You can put this solution on YOUR website!
x/8-x/12=1
x = 24
It will fill three times and emptied twice in 24 minutes.
check
24/8-24/12=1
3-2=1